Ios game app gps based jobs

I'm a beginner wanting to learn how to create my first React Native app. I'm interested in building a simple multi-page app for both Android and iOS. Ideal candidates should have: - Proficiency in React Native and mobile app development - Prior experience in creating multi-page applications - Excellent communication skills to teach a programming novice like me

I'm needing a skilled Wix developer to build a membership website for our association. This project encompasses numerous features: - Member Registration: Design an accessible registration process for new members. - Payment Processing: Implement a seamless and secure system for processing recurring membership subscriptions. - Member Login & Account Management: Enable members to login using their email and password in order to manage their own account details. Prior experience in executing similar projects and knowledge in payment gateways is preferred. The website should be user-friendly, guaranteeing our members a smooth and intuitive experience. Your expertise in building Wix websites will be instrumental to the successful completion of this project.

I'm seeking a proficient developer to create a tools app locker. Key elements to be implemented: - No need for Screen Time API integration. - It should focus on Shield Action Extension. Ideal Skills and Experience: - Screen Time APi experience. - Shield Action Extension experience - Knowledge in iOS App development. Bidders with a proven track record in similar projects will be prioritized. It's not mandatory, but examples of your previous works will give you an edge. Looking forward to seeing your bids! I will give bonus if free lancer can provide a simple demo Please say "Android" at top of your proposal, it will be filtered

I am seeking an app developer to create a mobile app for both iOS and Android. The key functionality of this app will be to provide highly customized, individualized meditation programs. Features Needed: - User Profiles: to collect personal information and preferences - Customizable Meditation Programs: based on the user's individual profile - User-friendly interface The mobile app should be functional and user-friendly, guiding the user smoothly through their personalized meditation program. Ideal Skills & Experience: - Mobile App Development for both iOS and Android - Experience in personalization and customization of apps - Prior work with wellness and meditation apps would be a plus. If you fit the bill, I look for...

I'm seeking a proficient developer to create a tools app locker. Key elements to be implemented: - No need for Screen Time API integration. - It should focus on Shield Action Extension. Ideal Skills and Experience: - Screen Time APi experience. - Shield Action Extension experience - Knowledge in iOS App development. Bidders with a proven track record in similar projects will be prioritized. It's not mandatory, but examples of your previous works will give you an edge. Looking forward to seeing your bids! I will give bonus if free lancer can provide a simple demo Please say "Android" at top of your proposal, it will be filtered

I'm looking for a talented game developer who can integrate Google Maps into a puzzle game I'm developing. Key requirements: - Creating simple puzzles with clear solutions - Google Maps integration for navigation purposes during gameplay - walking in street view and find things. Environment updated by downloading from google as you walk. Effective skills and Experience: - Game development, specifically in puzzle games - Proficiency in integrating Google Maps feature for navigation during game design - Capability to design simple but engaging puzzles Your knowledge and expertise in these areas will be pivotal to the successful development of a user-oriented puzzle game with an exciting navigation feature.

...video streaming app that integrates with Zoneminder as the source. The app should be available on both iOS and Android platforms, with the core feature being live streaming. Users should be able to access the live video feed through the app. Key Requirements: - Integration with Zoneminder: The live video source for the app will be Zoneminder. Experience with this platform would be an advantage. - Cross-Platform Development: The app must be developed for both iOS and Android to reach a wider audience. - Live Streaming: The main functionality of the app is the ability to stream live video. Prior experience with video streaming is desirable. - User Registration and Login: The live streaming feature should be accessible only after a u...

I have an existing React Native project for a Cards Against Humanity game that needs some adjustments and updates. Key Tasks: - Fixing Errors: The current project has some bugs that need to be addressed. The app is crashing on startup and experiencing database retrieval issues. Your task would be to resolve these errors and make the application functional again. - Database Update: You'll need to shift from the current WebSQL database to MySQL and ensure smooth data storage and retrieval. New Features to Add: - User Authentication System: Incorporate a new authentication system to enhance user privacy and security. - Game Timer: Implement a game timer to bring an additional level of challenge and excitement to the gameplay. - Animations & Interactivit...

...that allows my customers to fund their betting accounts with the help of MobCash API. The application should be available on both iOS and Android platforms. Design and UI/UX: - Although I don't have a specific design in mind, I want the application to be user-friendly and intuitive. I am open to suggestions and ideas for the design and user interface. Additional Features and Functionalities: - Besides the MobCash API integration, I am not sure about any additional features or functionalities that I may require. I am open to suggestions and recommendations from the developer. Ideal Skills and Experience: - Experience in developing mobile applications for both iOS and Android platforms. - Strong understanding of API integration, specifically with MobCash API. - Abil...

I have everything well set, i just need to fix multiplayer issues as attached

I'm currently in need of someone with expertise in graphic design to help reimagine the layout of my existing text-based logo. While the style should remain consistent, I want to rearrange the logo so teh writing is all on one line, retain the turbo either between the works or at the end of the words and remove the spanner. The logo is for a long banner for the front of a building. Key requirements include: - Ability to work with text-based logos - Skilled in modern, minimalistic design - Proficient in reorganizing elements for a visually striking yet organized output Aesthetics are vital in this task, yet the ability to incorporate the reorganized elements seamlessly into the existing style is equally important. Note that the style is not changing, it's the la...

I'm seeking a talented web game developer to take my current live game to the next level. The project will involve several enhancements and optimizations to make the game more engaging. The game is live and running -- Key Tasks: - Implement new graphics and animations: I'm particularly interested in having car, background, and other animations added. These should be creative and interactive to enhance the player experience. - Incorporate sound effects: Sound is an important aspect of any game and I'd like to include sound effects that enhance the overall experience. - Perform necessary bug fixes and improve the game's performance, rendering, scaling, and responsiveness: Ensuring the game runs smoothly on ANY browser (desktop ...

...collection is ready. Total 13 apis Key Requirements: - Proficiency in React Native for both iOS and Android platforms - Prior experience in developing e-commerce applications - Ability to implement custom features as per the requirements of the project - Strong understanding of user profiles & authentication, product catalog & search, and shopping cart & checkout process Your primary focus will be on creating a seamless e-commerce experience for customers through the implementation of custom features. Your expertise in React Native will ensure the application is user-friendly, reflects the brand's identity, and meets the specific project requirements. Ideal Skills and Experience: - React Native - E-commerce app development - Custom feature implementat...

...transactions (trades and adds/drops), weekly schedules (head-to-head matchups by week), weekly lineups, scoring settings, and league settings The Yahoo API Endpoints you'll need to use as inputs to derive the above data extracts for a particular league are: - the associated League ID (each league created by Yahoo is given it's own unique ID that a league member can provide) - the associated Game Key (there is a unique Game Key provided by Yahoo by fantasy sport and by year) - I have an online resource that outlines the baseline setup for what is required to leverage the Yahoo API, so can provide that I'm looking for a programmer who has experience in web scraping and working with APIs, especially the Yahoo API. Knowledge of fantasy football would be a very...

I'm in need of a skilled video editor to help me with my soccer highlight reels. Key Responsibilities: - Edit soccer game footage into engaging, fast-paced highlight reels Ideal Skills and Experience: - Proficiency with video editing software (e.g. Adobe Premiere Pro, Final Cut Pro) - Proven experience in editing sports videos, specifically soccer - Ability to deliver high-quality, fast-paced edits that captivate the audience Please let me know if you have any experience with soccer video editing. I'd love to see some of your previous work before we move forward.

ATTENTION: This is not a project to crea...a 3D model. It's to create a sample mobile app in Flutter. I need a 3D object renderer programmed in Flutter for PLY files. The intended purpose is visualization rather than animation or virtual reality. The selected candidate should possess: - A strong knowledge of Flutter and 3D rendering techniques. - Previous experience in creating high-quality renderers, as this project demands a high-performance level. The renderer should include the following functionalities: - The ability to rotate objects. - Zoom in and out capabilities. As an expert in this field, you're expected to provide advice on the best techniques and practices to achieve a high-quality 3D object visualization. The Flutter project need to be executable on b...

...to convert my existing PortVB Desktop App into an iOS/Mac Desktop App. It a small tool that runs on a Windows PC and reads some flat XML files and inserts/updates a mySQL database. We need the same program to be able run on a iOS/Mac desktop. I have all the VB Project files/ Source code. - Skills in app development for iOS/Mac, ideally with previous experience in app conversion - Knowledge of data syncing, user authentication, and offline access, in case these features need to be incorporated - Familiarity with contacts management, communication, scheduling, calendar integration, and file/document management functionalities for potential focus areas - Creative design skills to potentially revamp the user interface and overall desi...

I'm in need of an experienced app developer to make updates and improvements in an already built app, and who can seamlessly integrate with the system and other RTOs used in Australia Requirements: - Expertise in iOS app development - Proficiency in API usage and system integration - Familiarity with Axcelarate is preferable but not required Key Functions: - This application needs to be able to pull and display data from Axcelarate via API. As an app developer applying for this project, you should have a strong grasp of API integration and a proven track record with iOS application development.

...launch and scale of my new Info Product, a Home Services based Launch and Scale Program. The ideal candidate should be based in the US, have an excellent command of the English language, and possess a proven track record of successful high-ticket sales. Key Responsibilities: - Collaborate on the development of sales strategies for the Home Services program - Conduct sales calls and negotiations with potential clients - Close high-value deals in the Home Services industry Ideal Skills and Experience: - Proven experience as a high-ticket closer in the US market - In-depth knowledge of the Home Services industry - Excellent communication and negotiation skills - Experience in launching and scaling of info products is a plus If you are a US-based high-ticket closer w...

I'm looking to have an iOS app developed that allows users to complete a questionnaire and receive personalized feedback as a result. Key Features: - The app should only be available on iOS devices. - It should not require users to create an account, enabling them to use it anonymously. - The questionnaire should provide personalized feedback based on the user's responses. Skills and Experience: - Proficient in iOS app development, with a portfolio of completed projects. - Experience in developing apps that handle user data securely and anonymously. - Prior work on applications that generate personalized content or feedback for users would be a plus. I'm open to hearing your suggestions on how to best implement this idea, ...

I am in need of a talented app developer who can design and create a mobile application compatible with both iOS and Android platforms. The primary objective of this app will be to aid with the tracking of a game. This must consist of a few specific features: - Allows player to input total points for each category - Ability to track and deduct cost from the players inputted total "points" for the category - Output purchased skills / spells into a final screen with buttons for each skill or spell purchased that when pressed are marked as "used" - Reset button which takes all current purchased skills or spells back to unused state - Ability to save "battle board" - the final screen of selected skills / spells - to be loaded later or...

...are seeking a skilled developer to create a Windows-based keyboard emulator, specifically designed for gaming. The emulator must operate at a low system level to effectively mimic keyboard inputs for gaming purposes without requiring hardware. Key Requirements: OS Compatibility: The emulator should work exclusively on Windows systems. Emulation Focus: Aimed at simulating keyboard inputs for gaming applications. Ideal Skills and Experience: Proficient in Windows application development. Expert in low-level programming, specifically in system-level assembly language. Knowledgeable in gaming input emulation and keyboard input simulation. Experience in backend applications is beneficial. Project Specifics: The emulator must not breach game firewall securities or require una...

I'm looking for a skilled Android game developer to create a mobile game app. The app will be a puzzle game designed for a wide audience. Key Requirements: - Game should run smoothly on Android devices - Game should be engaging and addictive - Intuitive controls and pleasant user interface - Strong problem-solving skills will be pivotal for this project - Previous experience in developing puzzle games would be a plus Please keep in mind that an ideal candidate should be able to deliver a polished product, with a focus on user experience and retention. Your creativity and strategic thinking will be highly valued in this project.

...features and description for your game "Old Masti": **Title:** Old Masti **Description:** Relive the nostalgia of the good old days with "Old Masti" - the ultimate hide & seek adventure! Choose your role as either a seeker or a hider, and let the fun begin. Construct your hiding spots from cars or office desks, and seek refuge in unexpected places like the water, hay piles, cornfields, or even the boss' office. But remember, the real thrill lies in pushing others into the seeker's vision field. Just don't forget to be kind in your mischief! **Key Features:** - Dive into beautiful and unique 3D visuals that transport you back in time. - Take on the role of either a seeker or a hider, each with its own exciting challenges. - Enjoy complete ...

I need a logo design for my hair salon, "CXR Hair Studio". I'm looking for a simple and sleek text-based logo. You can have the words “cxr” and “hair studios” in different fonts to spice it up. The main requirements are: - Color Scheme: The logo should have a black background with white letters. The words “CXR” and “hair studios” can be in different fonts to spice it up as well. This minimalist approach will help maintain a clean, professional look that's essential for a hair salon. - Font Style: I'm hoping to have an elegant font style for the logo. This will give it a sophisticated and stylish visual appeal. - Graphic Elements: I'm not looking for any graphic elements to be incorporated with the text. ...

I'm looking for a skilled Spring Boot developer to help me set up role-based security for my application. The main goal of this is to ensure proper authorization across different user types. Here's what I have in mind for this project: - I need the system to restrict access to various functionalities based on the user's role. - The application will have three types of users: Administrators, Regular Users, and Guests. - Among administrators, I need a specific functionality for them to set up role permissions. Technical Requirements: - Proven experience with Spring Boot and security implementations. - Excellent understanding of role-based access control. - Strong knowledge of setting up and managing user roles. I'm looking forward to collaboratin...

I'm looking for a skilled iOS and android developer to create an application aimed at adults and teenagers. Key features needed: - Tracking Services: The application should be able to provide real-time tracking services for various needs. Ideal Skills: - Experience with android and iOS platform application development - Knowledge of real-time tracking services integration - Familiarity with creating applications for adults and teenagers

I need a small application prototype with the following features: Multi-Employer Job Portal/Admin app (Role Based access) User/applicant App (for Multiple applications to different employers) User Profile Document Upload (Save documents to Db and attachments to Blob Storage ) Send Emails to Employers and applicants back and forth 2 Apps in total ie. admin app and applicant app. job application requirements will be provided. Nodejs, angular, My SQL, ORM, Data Seeding, Migrations should be used.

I'm looking fo...profile photo for my PUBG account. Key Requirements: - Style: Cartoon - The photo should be in a visually appealing, animated style. - Elements: In-game items - I'd like the photo to include some notable in-game items, which I will provide for reference. - Color Scheme: Bright and vibrant - The overall color palette should be lively and eye-catching. Ideal Skills and Experience: - Strong background in graphic design, with experience in creating cartoon-style artworks. - Proficiency in using design software to create high-resolution, detailed images. - Familiarity with PUBG or similar games to understand and accurately depict in-game items. Note: As the photo will be used as a profile picture, it's important that the final desig...

I'm looking for a web developer to create an informative website on Hostinger. All the necessary project information - including website content, theme (have flier can send to match), logo, and colour scheme - have been collected, finalised and ready for development. The website will include the fo...Notes page While I didn't specify any additional functionality or design preferences, I do expect the website to: - Be intuitive and easy to navigate - Incorporate our company branding (logo, colour scheme) Ideal Skills: - Proficiency in Word Press for hosting on Hostinger - Sound experience with website design and development - Excellent communication skills - Ability to implement a website based on provided content, theme, and logo. - Good understanding of essentials su...

I'm seeking a highly experienced web and app developer to create a top-tier informational website and corresponding Android and IOS applications. Key Functionalities: - The website and applications should be rich in features to provide a seamless browsing experience for the users. - I require a blog section that is easy to navigate and manage. - A robust contact form that seamlessly connects to my email system. - A subscription option for users to stay updated with the latest information. Page Estimation: I anticipate the website to have between 5-10 pages. Ideal Skills and Experience: - Proficiency in website and application development for both Android and IOS platforms. - Strong experience in building informational websites with the required features. - ...

I need a designer for a flyer/postcard promoting my service-based business. This piece plays a significant role in announcing our offerings to the market. Key Requirements: - Design should promote our business services effectively. - Match the design color scheme with our existing business logo colors. Ideal Skills: Freelancers with experience in designing marketing/advertising materials, particularly for service-based businesses, will be ideal for this project. A keen sense of color matching and understanding of marketing strategies will be beneficial.

I'm looking for a designer to create four unique card templates for my fantasy trading card game. Please note that these designs should vary in rarity, with four different grades. Requirements: - The card templates should have a cartoonish art style. - Each card template should include: - A designated area for a character portrait. This should be distinct and easily distinguishable from the other elements on the card. - A section to display the character's stats. These stats should be prominent and easily readable. This area should only need space for 2 numbers. - An area for the character's abilities. This text section should be carefully designed to make the abilities stand out. Ideal candidates should have experience in: - Designing for trading card game...

I have a iOS application with a few bugs that needs fixing and adding the function of inviting phone contacts to our app. iOS application built in: - Objective C - Native App and UIKit I will share the specification document when we speak in freelancer chat.

Help add search filter to iOS Swift App that exposes the selected items in the array (selected indexes) and the selected index if only 1 is returned.

I'm looking for a skilled video editor who can create a dynamic and engaging highlight reel, targeting the performance of a specific baseball player. This project requires: - Expert level experience in creating sports related video content. - Proficiency in video editing software (Adobe Premiere Pro, Final Cut Pro). - Knowledge of the game of baseball to understand the important aspects of player's performance. - Ability to select key moments from the footage that highlight the player's skill. - Creativity to deliver a tight, fast-paced reel capturing the player's best moments. - Communicative and responsive to input and feedback. Please provide examples of your prior work in related projects, especially in sports video editing.

I'm in need of a Point of Sale (POS) interface that works on both Android and iOS devices. The main functionality requirement for this interface is barcode scanning. Additionally, I need this POS interface to support multiple user profiles, each with their unique access levels. Key Project Requirements: - Develop a Point of Sale interface that functions on Android and iOS platforms. - Implement barcode scanning capabilities within the interface. - Create a multi-user system with different access levels for each user. I'm looking for a developer with experience in: - Android and iOS development - Barcode scanning integration - User management systems

I'm seeking a proficient social media manager to lead our Facebook, Instagram, and Whatsapp presence with the main goal of amplifying our brand visibility. Your responsibilities will include: - Crafting and publishing engaging content weekly on these platforms to keep the audience updated and boost user engagement. - Monitoring user interactions and responding appropria...responsibilities will include: - Crafting and publishing engaging content weekly on these platforms to keep the audience updated and boost user engagement. - Monitoring user interactions and responding appropriately to maintain a positive brand image. Strong command over these platforms, creativity, and experience in driving brand awareness are required. Let's work together to take our social media game...

...unauthorized accounts being opened with my information all across various websites most of which I’ve never heard of or visited. Also there’s nonstop access to my existing online accounts and noticing suspicious activity on my devices. While I've taken measures on some accounts to secure them, it's not enough and I need professional intervention. The compromised accounts include apps, social media, GPS and financial. The activity on my devices sparks concern, particularly regarding showing activity in my history I did not do and I'm looking for expert guidance I have already wiped my device multiple times and have even gone as far as establishing all new digital identifiers such as new phone number, email, and Apple ID to no avail. Skills/...

I'm seeking an experienced app developer to create a business mobile application that's compatible with both iOS and Android platforms. Key Features Required: - Integration with a payment system to facilitate transactions within the app. Ideal Candidate Skills: - Strong cross-platform development experience (iOS and Android). - Proven track record in integrating payment systems in apps. - Familiar with creating robust, secure financial transaction systems. - Solid understanding of UI/UX for business apps on both platforms. Please include examples of business apps with payment integration you've previously developed in your proposal. Thanks!

I need an iOS app designed for college recruitment information and news. This app will cater to a target audience interested in college recruitment. It should be easy to navigate and provide informative blog posts. Key elements must include: - Smooth navigation for ease of use - Engaging and rich content writing for blog posts - 3 Pages: College Coaches Needs Blog Post, New Trends, College Tools and attachments to download from there. - Constant updates about college recruitment news Ideal Skills: - Experience with iOS App development - Understanding of the education sector – specifically, college recruitment - Strong writing skills for blog posts - Ability to ensure secure and private user experiences is essential.

I'm seeking a seasoned web designer to curate a service-based website for both B2B (Business-to-Business) and B2C (Business-to-Consumer) audiences requires a strategic approach to address the distinct needs of each target group. Medical Staffing Agency primarily located in the Midwest current Base Website Custom Design: Includes up to 4 unique page designs. Responsive Layout: Mobile-friendly design that adapts to various screen sizes and devices. CMS Integration: WordPress installation and setup, allowing for easy content management. Content Strategy Session: Session to outline the site’s content needs and SEO goals. Contact Form: Integration of a basic contact form which stores records in the CMS system. Google Analytics Setup: Integration of Google Analytics for tracki...

I'm looking an illustrator to create captivating illustrations to accompany my children's short story. The project includes a cover and 14 drawings, all tailored towards 4-8 year-olds. As the story revolves around a child's love for football, a basic understanding of the game would be ideal. I'm looking for cartoon style similar to the attached. Other than the front cover, each page should be related to the 4 lines of the story which will be provided but a summary of the story is that a young boy loves playing football and scoring goals, his team enter a tournament and he has to play in goal but becomes the hero.

I'm seeking a skilled iOS and Android developer, with proven experience in designing and building complex, subscription-based applications. Features: - An intuitive interface facilitating life coaching, psychotherapy and addiction services, coupled with comprehensive course content. - Rich profile pages that offer an in-depth view for each user. - Direct messaging capabilities for seamless communication. Activity Tracking: A core element of this app is the tracking of users’ activities. This entails: - Sleep tracking: To monitor and analyse the user's sleep patterning. - Mental health tracking: A holistic mental health tracker incorporating mood patterns, meditation frequency and daily tasks check-in. Subscription: - A Monthly subscription option...

I'm looking for an experienced developer to create a Flag Status Alert app for both iOS and Android. The app will notify users when to fly the flag at full or half-staff based on their state. The information could be obtained from all 50 state and territory governor pages and the White House website or through a manually updated database. Key Features: - Development for both iOS and Android platforms - Implementation of user notification features including push notifications, email alerts, and SMS alerts. Ideal Skills and Experience: - Proven track record in developing and launching user-friendly mobile applications for both iOS and Android - Familiarity with APIs and web scraping to acquire real-time data from government websites or the abi...

I'm looking for a talented app designer to create an app that will serve as a job portal in the movie industry. The app will be available on both iOS and Android platforms. Key Features: - User Profiles: Users should be able to create and maintain profiles showcasing their work and experience in the movie industry. - Push Notifications: The app should feature push notifications to keep users informed about job opportunities and industry news. - Search Functionality: A robust search functionality is crucial for users to easily find relevant job postings. Ideal candidates should have experience in app design, particularly in developing user-centric and intuitive interfaces. Knowledge of job portals, or similar platforms, will be an added advan...

I'm in need of a skilled app developer to create a B2B sales app for both iOS and Android. The app’s main objective is to facilitate business-to-business sales. Key Features: - Award Distribution: The app should have a feature that allows the distribution of awards among users. - User Experience: Ensuring a smooth and intuitive user experience is crucial for this app's success. - User-to-User Exchange: Implementing a user-to-user exchange option is a necessary feature to support B2B sales interactions. Ideal candidates should have: - Prior experience in developing cross-platform apps (iOS and Android). - Strong understanding of B2B sales and the features that facilitate this type of transaction. - Skilled in creating user-friendly inter...

I require a skilled mobile app developer to create a comprehensive auction app for both iOS and Android platforms. This app will be focused on the auctioning of collectibles, and as such, must cater to the unique needs of this niche. Key Features: - Bidding System: The app should have a robust bidding system that allows users to place bids on items in an intuitive and engaging manner. - User Profiles: Users should be able to create profiles, view their bidding history, and manage their auctions effectively. Key Points: - The primary focus of this app is collectibles. Experience in developing similar niche market apps is a plus. - Please ensure that the UI/UX of the app is user-friendly and engaging, especially during the bidding process. -...

I'm in need of a skilled UI/UX designer for a medical app I'm developing. The app will be available on both iOS and Android platforms, and is designed to provide users with medical opinions using AI. Key features to be included in the app are: - Diagnosis Suggestions: The app should provide users with accurate diagnosis suggestions based on their reported symptoms. - Symptom Checker: A symptom checker that helps users identify the possible medical conditions related to their symptoms. - Medical Records Storage: A secure and easy-to-use medical records storage system, allowing users to keep track of their health history. Ideal candidates for this project should have: - Proven experience in designing UI/UX for mobile applications, particu...

...services alongside cab booking. I want this app to be available on both iOS and Android systems. Here's the primary features that I'm looking for: - **Real-Time GPS Tracking**: I want my users to be able to track the delivery of their food or the location of their cab in real-time. - **In-App Payment System**: A seamless and secure payment system that ensures a smooth transaction experience for my users. - **Ratings and Reviews**: A feature that allows users to rate and review the quality of both the food delivery service and the cab service. Ideal Skills and Experience for this job: - Proficiency in developing cross-platform applications for iOS and Android. - Experience in integrating GPS tracking systems. - Previous work in develo...